EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 2
Title ""
Date ""
Rev ""
Comp ""
Comment1 ""
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	3800 5350 3500 5350
Connection ~ 3800 5350
Wire Wire Line
	3500 5350 3200 5350
Connection ~ 3500 5350
Wire Wire Line
	3200 5350 2950 5350
Connection ~ 3200 5350
Wire Wire Line
	2950 5350 2650 5350
Connection ~ 2950 5350
Wire Wire Line
	2650 5350 2350 5350
Connection ~ 2650 5350
Wire Wire Line
	2350 5350 2200 5350
Connection ~ 2350 5350
Wire Wire Line
	4100 5350 3800 5350
Wire Wire Line
	3800 5050 3500 5050
Connection ~ 3800 5050
Wire Wire Line
	3500 5050 3200 5050
Connection ~ 3500 5050
Wire Wire Line
	3200 5050 2950 5050
Connection ~ 3200 5050
Wire Wire Line
	2950 5050 2650 5050
Connection ~ 2950 5050
Wire Wire Line
	2650 5050 2350 5050
Connection ~ 2650 5050
Wire Wire Line
	2350 5050 2200 5050
Connection ~ 2350 5050
Wire Wire Line
	4100 5050 3800 5050
$Comp
L global:C C?
U 1 1 615B5EA2
P 2350 5200
AR Path="/5CEE5B5C/615B5EA2" Ref="C?"  Part="1" 
AR Path="/615B5EA2" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EA2" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EA2" Ref="C?"  Part="1" 
F 0 "C?" H 2375 5300 50  0000 L CNN
F 1 "4.7µF" H 2375 5100 50  0000 L CNN
F 2 "C:0805" H 2388 5050 50  0001 C CNN
F 3 "" H 2350 5200 50  0000 C CNN
F 4 "607" H 1550 -1775 50  0001 C CNN "Partkeepr"
	1    2350 5200
	1    0    0    -1  
$EndComp
Connection ~ 1450 3200
Wire Wire Line
	1450 3200 1150 3200
Connection ~ 1450 2900
Wire Wire Line
	1450 2900 1150 2900
Wire Wire Line
	1800 3100 2200 3100
Wire Wire Line
	1800 3200 1800 3100
Wire Wire Line
	1450 3200 1800 3200
Wire Wire Line
	1800 2900 1800 3000
Wire Wire Line
	1450 2900 1800 2900
Wire Wire Line
	2200 3000 1800 3000
Text Label 4500 3000 0    60   ~ 0
USB_OTG_FS_N
Text Label 4500 2900 0    60   ~ 0
USB_OTG_FS_P
$Comp
L global:C C?
U 1 1 615B5EB5
P 2950 5200
AR Path="/5CEE5B5C/615B5EB5" Ref="C?"  Part="1" 
AR Path="/615B5EB5" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EB5" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EB5" Ref="C?"  Part="1" 
F 0 "C?" H 2975 5300 50  0000 L CNN
F 1 "1µF" H 2975 5100 50  0000 L CNN
F 2 "C:0805" H 2988 5050 50  0001 C CNN
F 3 "" H 2950 5200 50  0000 C CNN
F 4 "606" H 1575 -700 50  0001 C CNN "Partkeepr"
	1    2950 5200
	1    0    0    -1  
$EndComp
$Comp
L global:C C?
U 1 1 615B5EBC
P 3200 5200
AR Path="/5CEE5B5C/615B5EBC" Ref="C?"  Part="1" 
AR Path="/615B5EBC" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EBC" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EBC" Ref="C?"  Part="1" 
F 0 "C?" H 3225 5300 50  0000 L CNN
F 1 "100nF" H 3225 5100 50  0000 L CNN
F 2 "C:0805" H 3238 5050 50  0001 C CNN
F 3 "" H 3200 5200 50  0000 C CNN
F 4 "605" H 1550 -700 50  0001 C CNN "Partkeepr"
	1    3200 5200
	1    0    0    -1  
$EndComp
$Comp
L global:C C?
U 1 1 615B5EC3
P 3500 5200
AR Path="/5CEE5B5C/615B5EC3" Ref="C?"  Part="1" 
AR Path="/615B5EC3" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EC3" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EC3" Ref="C?"  Part="1" 
F 0 "C?" H 3525 5300 50  0000 L CNN
F 1 "100nF" H 3525 5100 50  0000 L CNN
F 2 "C:0805" H 3538 5050 50  0001 C CNN
F 3 "" H 3500 5200 50  0000 C CNN
F 4 "605" H 825 -1925 50  0001 C CNN "Partkeepr"
	1    3500 5200
	1    0    0    -1  
$EndComp
$Comp
L global:C C?
U 1 1 615B5ECA
P 4100 5200
AR Path="/5CEE5B5C/615B5ECA" Ref="C?"  Part="1" 
AR Path="/615B5ECA" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5ECA" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5ECA" Ref="C?"  Part="1" 
F 0 "C?" H 4125 5300 50  0000 L CNN
F 1 "100nF" H 4125 5100 50  0000 L CNN
F 2 "C:0805" H 4138 5050 50  0001 C CNN
F 3 "" H 4100 5200 50  0000 C CNN
F 4 "605" H -800 400 50  0001 C CNN "Partkeepr"
	1    4100 5200
	1    0    0    -1  
$EndComp
$Comp
L global:C C?
U 1 1 615B5ED1
P 3800 5200
AR Path="/5CEE5B5C/615B5ED1" Ref="C?"  Part="1" 
AR Path="/615B5ED1" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5ED1" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5ED1" Ref="C?"  Part="1" 
F 0 "C?" H 3825 5300 50  0000 L CNN
F 1 "100nF" H 3825 5100 50  0000 L CNN
F 2 "C:0805" H 3838 5050 50  0001 C CNN
F 3 "" H 3800 5200 50  0000 C CNN
F 4 "605" H -225 -1975 50  0001 C CNN "Partkeepr"
	1    3800 5200
	1    0    0    -1  
$EndComp
$Comp
L global:C C?
U 1 1 615B5ED8
P 1000 2900
AR Path="/5CEE5B5C/615B5ED8" Ref="C?"  Part="1" 
AR Path="/615B5ED8" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5ED8" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5ED8" Ref="C?"  Part="1" 
F 0 "C?" H 1025 3000 50  0000 L CNN
F 1 "22pF" H 1025 2800 50  0000 L CNN
F 2 "C:0603" H 1038 2750 50  0001 C CNN
F 3 "" H 1000 2900 50  0000 C CNN
F 4 "600" H 125 -2150 50  0001 C CNN "Partkeepr"
	1    1000 2900
	0    1    1    0   
$EndComp
$Comp
L global:C C?
U 1 1 615B5EDF
P 1000 3200
AR Path="/5CEE5B5C/615B5EDF" Ref="C?"  Part="1" 
AR Path="/615B5EDF" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EDF" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EDF" Ref="C?"  Part="1" 
F 0 "C?" H 1025 3300 50  0000 L CNN
F 1 "22pF" H 1025 3100 50  0000 L CNN
F 2 "C:0603" H 1038 3050 50  0001 C CNN
F 3 "" H 1000 3200 50  0000 C CNN
F 4 "600" H 125 -2150 50  0001 C CNN "Partkeepr"
	1    1000 3200
	0    1    1    0   
$EndComp
$Comp
L global:Crystal Y?
U 1 1 615B5EE6
P 1450 3050
AR Path="/5CEE5B5C/615B5EE6" Ref="Y?"  Part="1" 
AR Path="/615B5EE6" Ref="Y?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EE6" Ref="Y?"  Part="1" 
AR Path="/60D9D499/615B5EE6" Ref="Y?"  Part="1" 
F 0 "Y?" H 1450 3200 50  0000 C CNN
F 1 "25Mhz" H 1450 2900 50  0000 C CNN
F 2 "Y:5032" H 1450 3050 50  0001 C CNN
F 3 "" H 1450 3050 50  0000 C CNN
F 4 "1650" H 150 -2150 50  0001 C CNN "Partkeepr"
	1    1450 3050
	0    1    1    0   
$EndComp
$Comp
L global:C C?
U 1 1 615B5EED
P 2650 5200
AR Path="/5CEE5B5C/615B5EED" Ref="C?"  Part="1" 
AR Path="/615B5EED" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5EED" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5EED" Ref="C?"  Part="1" 
F 0 "C?" H 2675 5300 50  0000 L CNN
F 1 "10nF" H 2675 5100 50  0000 L CNN
F 2 "C:0805" H 2688 5050 50  0001 C CNN
F 3 "" H 2650 5200 50  0000 C CNN
F 4 "605" H 75  1125 50  0001 C CNN "Partkeepr"
	1    2650 5200
	1    0    0    -1  
$EndComp
Text Label 4100 2200 1    60   ~ 0
swclk
Text Label 4500 2800 0    60   ~ 0
swdio
Text Label 2200 3200 2    60   ~ 0
nrst
Text Label 5900 2200 2    60   ~ 0
swclk
Text Label 5900 2400 2    60   ~ 0
swdio
Text Label 5900 2500 2    60   ~ 0
nrst
Text Label 5900 2300 2    60   ~ 0
GND
Text Label 5900 2100 2    60   ~ 0
3.3V
$Comp
L conn:CONN_01X05 P?
U 1 1 615B5EFC
P 6100 2300
AR Path="/60D9D499/60D9D7FC/615B5EFC" Ref="P?"  Part="1" 
AR Path="/60D9D499/615B5EFC" Ref="P?"  Part="1" 
AR Path="/615B5EFC" Ref="P?"  Part="1" 
F 0 "P?" H 6178 2341 50  0000 L CNN
F 1 "CONN_01X05" H 6178 2250 50  0000 L CNN
F 2 "Connector:PinHeader2.54_1X5" H 6177 2204 50  0001 L CNN
F 3 "" H 6100 2300 50  0000 C CNN
F 4 "100" H 6100 2300 50  0001 C CNN "Partkeepr"
	1    6100 2300
	1    0    0    -1  
$EndComp
Wire Wire Line
	2750 1150 2900 1150
Wire Wire Line
	2750 1400 2750 1150
Wire Wire Line
	2600 1400 2750 1400
Wire Wire Line
	2150 1400 2300 1400
Wire Wire Line
	2150 1150 2150 1400
Connection ~ 2150 1150
Wire Wire Line
	2100 1150 2150 1150
Text Label 2100 1150 2    60   ~ 0
nrst
$Comp
L global:C C?
U 1 1 615B5F0B
P 2450 1400
AR Path="/5CEE5B5C/615B5F0B" Ref="C?"  Part="1" 
AR Path="/615B5F0B" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5F0B" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5F0B" Ref="C?"  Part="1" 
F 0 "C?" H 2475 1500 50  0000 L CNN
F 1 "100nF" H 2475 1300 50  0000 L CNN
F 2 "C:0805" H 2488 1250 50  0001 C CNN
F 3 "" H 2450 1400 50  0000 C CNN
F 4 "605" H -8050 300 50  0001 C CNN "Partkeepr"
	1    2450 1400
	0    1    1    0   
$EndComp
Text Label 3800 2200 1    50   ~ 0
TX
Text Label 3900 2200 1    50   ~ 0
RX
Text Label 2200 5350 2    50   ~ 0
GND
Text Label 2200 5050 2    50   ~ 0
3V3
Text Label 4100 4500 3    50   ~ 0
3V3
Text Label 4000 4500 3    50   ~ 0
GND
Text Label 4500 2700 0    50   ~ 0
GND
Text Label 2700 2200 1    50   ~ 0
GND
Wire Wire Line
	850  2900 850  3200
Text Label 850  3050 2    50   ~ 0
GND
Text Label 2200 3700 2    50   ~ 0
GND
Text Label 2200 3800 2    50   ~ 0
3V3
Text Label 4500 2600 0    50   ~ 0
3V3
Connection ~ 2750 1150
$Comp
L global:SW_PUSH SW?
U 1 1 615B5F2D
P 2450 1150
F 0 "SW?" H 2750 1250 50  0000 C CNN
F 1 "nrst" H 2450 1100 50  0000 C CNN
F 2 "" H 2450 1150 50  0000 C CNN
F 3 "" H 2450 1150 50  0000 C CNN
	1    2450 1150
	1    0    0    -1  
$EndComp
$Comp
L ST:STM32L476RG U?
U 1 1 615B5F33
P 3350 3350
F 0 "U?" H 4300 2250 50  0000 L CNN
F 1 "STM32L476RG" H 3050 3350 50  0000 L CNN
F 2 "" H 2200 3850 50  0001 C CNN
F 3 "" H 2200 3850 50  0001 C CNN
	1    3350 3350
	1    0    0    -1  
$EndComp
Text Label 2600 2200 1    50   ~ 0
3V3
Text Label 4500 3100 0    60   ~ 0
USB_OTG_FS_ID
Text Label 4500 3200 0    60   ~ 0
USB_OTG_FS_VBUS
Text Label 2800 4500 3    50   ~ 0
3V3
Text Label 2700 4500 3    50   ~ 0
GND
Wire Wire Line
	4300 1150 4450 1150
Wire Wire Line
	4300 1400 4300 1150
Wire Wire Line
	4150 1400 4300 1400
Wire Wire Line
	3700 1400 3850 1400
Wire Wire Line
	3700 1150 3700 1400
Connection ~ 3700 1150
Wire Wire Line
	3650 1150 3700 1150
Wire Wire Line
	3700 900  3700 1150
Wire Wire Line
	3850 900  3700 900 
Wire Wire Line
	4150 900  4450 900 
Text Label 3650 1150 2    60   ~ 0
boot
$Comp
L global:R R?
U 1 1 615B5F4A
P 4000 900
AR Path="/5CEE5B5C/615B5F4A" Ref="R?"  Part="1" 
AR Path="/615B5F4A" Ref="R?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5F4A" Ref="R?"  Part="1" 
AR Path="/60D9D499/615B5F4A" Ref="R?"  Part="1" 
F 0 "R?" V 4080 900 50  0000 C CNN
F 1 "10K" V 4000 900 50  0000 C CNN
F 2 "R:0805" V 3930 900 50  0001 C CNN
F 3 "" H 4000 900 50  0000 C CNN
F 4 "910" H -6500 275 50  0001 C CNN "Partkeepr"
	1    4000 900 
	0    1    1    0   
$EndComp
$Comp
L global:C C?
U 1 1 615B5F51
P 4000 1400
AR Path="/5CEE5B5C/615B5F51" Ref="C?"  Part="1" 
AR Path="/615B5F51" Ref="C?"  Part="1" 
AR Path="/60D9D499/60D9D7FC/615B5F51" Ref="C?"  Part="1" 
AR Path="/60D9D499/615B5F51" Ref="C?"  Part="1" 
F 0 "C?" H 4025 1500 50  0000 L CNN
F 1 "100nF" H 4025 1300 50  0000 L CNN
F 2 "C:0805" H 4038 1250 50  0001 C CNN
F 3 "" H 4000 1400 50  0000 C CNN
F 4 "605" H -6500 300 50  0001 C CNN "Partkeepr"
	1    4000 1400
	0    1    1    0   
$EndComp
Connection ~ 4300 1150
$Comp
L global:SW_PUSH SW?
U 1 1 615B5F58
P 4000 1150
F 0 "SW?" H 4300 1250 50  0000 C CNN
F 1 "boot" H 4000 1100 50  0000 C CNN
F 2 "" H 4000 1150 50  0000 C CNN
F 3 "" H 4000 1150 50  0000 C CNN
	1    4000 1150
	1    0    0    -1  
$EndComp
Text Label 2900 1150 0    50   ~ 0
GND
Text Label 4450 900  0    50   ~ 0
GND
Text Label 4450 1150 0    50   ~ 0
3V3
Text Label 2200 2600 2    50   ~ 0
pile
$EndSCHEMATC